James H. Jensen was a chemical metallurgical process engineer from 1938 to the 1990s. He was born in 1914 and raised in Bellevue, Washington before moving to Seattle for high school. Jensen attended the University of Washington and graduated with a degree in chemical engineering. From there he began working for Standard Oil of California (1938-1940) and later Stuart Oxygen Company where he made deuterium and deuterium compounds for Lawrence Laboratory (1940-1942). During WWII he served in the army anti-aircraft artillery in the Philippines. After returning from the war he began working for Pacific Carbide and Alloys Company (1946-1950), Great Lakes Carbon Company (1950-1953) and the Western Knapp Engineering Company (1957-1977) where he dealt with uranium in New Mexico, Yugoslavia, and Argentina. In this interview, Jensen discusses his childhood on a small farm, education as a chemical engineer, engineer for Standard Oil of California, WWII service, starting an independent mining company, planning processing plants for acetylene, calcium carbide, diatomaceous earth, potash, and phosphates, being an engineer for Ralph M Parsons Engineering Company, recollections of Dwight D. Eisenhower and the Philippines during WWII. Appendices include supplemental statement on changes in mining written by Jensen in 1993.